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ERIC Number: EJ834124
Record Type: Journal
Publication Date: 2009-Apr
Pages: 8
Abstractor: As Provided
Reference Count: 36
ISSN: ISSN-0096-1523
The Adaptive Range of 1/f Isometric Force Production
Sosnoff, Jacob J.; Valantine, Andrew D.; Newell, Karl M.
Journal of Experimental Psychology: Human Perception and Performance, v35 n2 p439-446 Apr 2009
The adaptive range of 1/f dynamics in isometric force output was investigated. Participants produced isometric force to targets with predictable demands (constant and sinusoidal) and 1/f noise waveforms (white, pink, brown, and black) that also varied in the frequency bandwidth represented in the force signal (0-4 Hz, 0-8 Hz, and 0-12 Hz). The range of within-trial 1/f force dynamics produced was between darker than pink noise and lighter than black noise according to task conditions. The exponent of the respective 1/f force dynamics decreased as the frequency bandwidth of the force signal increased. The findings reveal an adaptive though restricted range of 1/f force variation that is modulated by the dynamics of the task constraints. (Contains 6 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A